Home / 3,947.79-5,923.68-2,192.85

Finding the Fourth Proportional to 3,947.79, 5,923.68 and 2,192.85

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Solution

The fourth proportional to 3,947.79, 5,923.68 and 2,192.85 is: 3,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.79 : 5,923.68 = 2,192.85 : x
  2. Step 2: Convert to fraction form
    3,947.79/5,923.68 = 2,192.85/x
  3. Step 3: Cross multiply
    3,947.79x = 5,923.68 × 2,192.85
  4. Step 4: Simplify right side
    3,947.79x = 12,989,741.69
  5. Step 5: Solve for x
    x = 12,989,741.69/3,947.79
  6. Step 6: Final answer
    x = 3,290.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.